I don't know the answers but taking "personal action" only hurts your colleagues who have to pick up the slack. Cx don't give a hoot as long as their aircraft get away
Not quite true. The high sick rate means more crew needed on standby at any given time. In the final analysis it means you need more total crewmembers on the payroll to face a given task.
The sad thing is that a few simple fixes would go a long way towards easing the frustration responsible for the high sickness rates.